CertiPUR-US Certified Memory Foam Camping Mattress - Portable Lightweight Sleeping Pad for Outdoor, Guest & Floor Bed with Waterproof Cover & Travel Bag - Twin Size, Brown - Perfect for Camping, Hiking, Travel & Home Use

Purchased this to use as a temporary mattress for my sofa as I have friend staying with me for an extended visit. I use 2 mattress covers on top of it and I also purchased wooden boards to go under the sofa cushions for stability. My sofa “bed” is more comfortable than my real bed with a queen sized mattress.I didn’t notice any odor and the average person who isn’t overly sensitive to packaging odors will not be bothered. I didn’t leave the cover off as it wasn’t necessary. It arrived in June so it was hot outside. The package was about to burst because the mattress was already swelling up in the Texas heat. I left it out overnight but honestly it puffed up to its max shortly after releasing it from the plastic package.It’s soft but firm. I don’t get the memory foam complaints as this stuff holds weight well. If you’re not average weight then this may not be for you, but that’s not the fault of the mattress or memory foam. Idk what kind of foam it is, if you’re excessively overweight it will sink in. I’m not using it in the ground so if that’s your purpose you may need to check reviews on stability on the ground with weight. I’d suggest buying 2 if you need extra stability to compensate for your weight. My friend is 195 and as a topper on my sofa it didn’t sink or sag. The sofa cushions are underneath. They’re relatively firm cushions otherwise if they’re been goi soft I would’ve removed them and placed the mattress directly on the sofa bed. I noticed some give until I bought the wooden board and put them under the cushions, but that’s the fault of my sofa springs and not the mattress. IMHO You can’t go wrong if you’re purchasing this for camping or as temporary bedding.I spent hours comparing these and settled on this one based on reviews, size and price and I’m glad I did.It comes with a really nice heavy duty cover for storage. The actual mattress cover can be removed and cleaned but I have 2 regular mattress covers and a fitted sheet over it so doubtful if washing will be needed. The mattress covers are for protection and added comfort but the mattress is comfortable without them.I like the nonskid surface on the bottom of the mattress as it keeps it in place and it doesn’t shift. It was the perfect length for my sofa.It’s so comfortable, I’m not sure now if my friend will want to leave. Lol.